Armature-winding apparatus



ARMATURE WINDING APPARATUS Original Filed Oct. 16, 1924 gnu e noz. if S (7 alitoz 2134 Patented Apr. 8, 1930 UNITED STATES PATENT OFFICE FRED e. DEWEY, or ANDERSON, INDIANA, ASSIGNOR, BY MESNE ASSIGNMENTS, 'ro DELCO-REMY CORPORATION, OF DAYTON, OHIO, A CORPORATION or :oELAwABn MATURE-WINDING Arr'ARArUs Original application filed October 16, 1824, Serial No. 743,978, now Patent No. 1,822,185,

dated March 22,

1927. Divided and this application filed November 18, 1926. Serial No. 148,285.

This invention relates to the winding of.

armatures having open slotted cores, and one of the objects is to provide apparatus for facilitating the manufacture of armature coils in a manner such that the leads or termnals of the coils will emerge as near as possible to the periphery of the core so that, in the connection of these leads to the commutator bars, abrupt bends in the leads and the crossing of a lead at right angles to the wires of a coil adjacent the end of the core, and consequent injury to the insulation of the coils and leads can be avoided.

This application is a division of copendlng application Serial No. 743,973 filed October 16, 1924, now Patent No. 1,622,185 patented March 22, 1927.

Further objects" and advantages of the present invention will be apparent from the I following description, reference being had to the accompanying drawings, wherein a preferred embodiment of one form of the present inventionis clearly shown.

In the drawings: Figs. 1 to 3 are perspective views showing different stages of a winding process embodying the present invention; and Fig; 4 isa fragmentary side view, partly in section, showing the winding apparatus.

The disclosed embodiment of the present invention is applied to the particular armature and winding machine disclosed in the oopending application of Albert B. Gomory,

Serial No. 751,183 filed November 20, 1924, but it is to be understood that the present 'invention may be applied to the winding of other open slotted armature cores, with such modifications as will be readily apparent to those skilled in the art.

Referring to the drawings, the armature includes a shaft 30 having journals 31, and

a laminated core 33 providing winding slots S S S etc. Each end of the core is provided with an insulating disc 36 of the same contour as the laminations 34. Adjacent discs 36, shaft 30 carries insulating tubes 37 and 38, respectively. The core slots are lined with suitable insulating material.

Winding of the armature is performed preferably by the use of a power'winding machine, and the machine, includes a winding head 50 mounted preferably upon a horizontally disposed spindle 51 which is driven in any suitable manner. The winding head 50 ly opposite scoop-like portions 55 and 56 merging into cheeks 55 and 56. The portion 55 are notched at 59 for a purpose to be described. The checks 55 and the cylindrical surface 57 of edges 55 and 56", 55 and 56 are angularly spaced with respect to the axis of the core 33 so that wires 76 and 77 will be guided into certain slots of the armature core 33 having a predetermined spacing when the core is revolved by the head 50. The wires 76 and 77 which are unwound from supply reels during the winding of wire upon a core, are led over guide wheels (not shown) located preferably above winding machine and at such an angle thereto that, as an end of the 56 merge with recess Mat the not be engaged by the shaft until after a scoop portion of the head has engaged the wires.

t is evident that as the indicated by arrow 80 in Fig. 1, the scoop portion 55 will cause the wires to be packed around the insulation 37 at the commutator end of the core. Thecscoop portion '56 will cause the wires to be packed around the insulation 38 at the other end of the core.

By a-suitable wire-tensioning device the wire will be held in engagement with the scoop portions or with thecheek portions so that the head may function properly to direct the wire into the slots. The cheek portions and the scoop portions are shaped so that there will be a substantial line of contact between the wires and the head'.' In this manner the pressure between the wires and head will be distributed over a substantial portion of the wire so that the pressure applied to the wire by the head at any point of contact will not be suflicient to injure the insulation of the wire. For example, the .line of contact between the wire and check 55 extend from the edge 55 of the head.

respectively. The edges armature shaft approaches the wires 76 and 77, these wires will head 50 revolves as.

(in Fig. 1) to the periphery Referring to Fig. 4, the armature core is maintained upon the winding head by means of a. presser block whlch is rotatably mounted on a rod 61 slidably supported by frame 62. A spring 63, bearing at one end against frame 62 and at the other against'a collar 64 carried by rod 61-, yleldlng- 1y presses the block 60 against the armature core. A lever 65 fulcrumed at 66 is connected at 67 with rod 61. By moving the free end 68 of the lever down, preferably by a pedal (not shown) connected with a strap 69, the block 60 may be withdrawn from the armature core to permit withdrawal of the core from the winding head.

The cylindrical portion 57 of the head 50 which defines the bottom of the recess 54, is provided with an indexing lug 58 adapted to project into that slot of the armature core which is midway between the slots which are located adjacent the cheeks 55 and 56. In starting the winding operation the slot S for receiving coil No. 1, will be alignedwlth cheek edge 55 while slot S will be aligned with cheek edge 56*. As the armature coils are successively wound on the core, slots S S S, etc., will be brought into alignment with the cheek edge 55*.

The winding machine thus far described is one which may be employed in the winding process disclosedin application Serial No. 751,183, referred to. The additional apparatus required to carry out the method of the present invention includes a ring 60 secured to presser head 60, and a hook plate 60" pivotally attached to the ring 60 and having a flange providing a hook 66.

In the particular example given, a white insulated wire 76 and a wire 77 having colored insulation are unwound simultaneously from supply reels and are wound upon the core in a manner to be described. In order to provide .leads for the coils, the wires joining the successively wound armature coils are formed into loops, and these loops are severed in two places differing in distance from the armature core whereby to make the end leads of armature coils longer than the start leads. Between successive winding operations some of these-leads are bent away from the region of winding of the coils so that the overlapping portions of the coils cannot ush the previously formed coil terminals own against the insulating tube 37. In other words, the winding'must proceed in such a way that the coil terminals can be brought out alongside the insulation disc 36, and so as not to be pressed down by the successive coil winding operations against the tube 37.

Inorder to facilitate this process of winding, 'th'ereis provided a handle 70 which' is provided with a central :bore adapted to fit over the commutator end of the armature shaft; The handle is provided with a hole 71 and with a plurality of books 72 each extending toward the operator who is on the same side of the. machine as the handle 70 in Figs. 1, 2 and 3. The drawings show ahandle having 14 hooks, one for each of the 14 slots of the armature core which has been selected a pair of wire snippers so that the start leads extending from the first turns of the coils will all be severed oil a uniform distance from the armature core. The sleeve 73 is provided with a groove 75 which serves as a guide for the snipper blades to facilitate cutting 011' the end leads at a uniform distance from the armature core and so that the end leads will be longer, as measured from the core, than the start leads.

Figs. 1, 2 and 3 show the manner of winding the first coil. The core 33 is placed between the head 50 and presser block 60 with the commutator end of the shaft 30 extending toward the operator. The hook tool 70 is assembled upon the commutator end of the shaft 30. The ends of the wires 76 and 77 leading from they supply reels and wire guiding pulleys, not shown, are first temporarily attached to the tool 70 by passing their ends through the hole 71 and pulling them out through the hollow handle as shown in Fig. 2. These wires will be crimped adjacent the hole 71 sufficiently to connect the wires and tool 70. Before rotating the head 50, the wires 76 and 77 are placed upon the hook plate 60 and within the hook 60, as shownin Fig. 1. The head 50 is rotated in the direction of the arrow 80 in Fig. 1, until the desired number of turns have been wound upon the core. Fig. 2 shows the armature at the end of this step inprocess. Next, the ends ofthe first coils on, marked 1 white and 1 colored are severed adjacent the shoul-' der 74 of tool 70. These ends lead from the 74 which serves as a guide for the blades of starting active coil sides of the first turns which 1 have hitherto been kept out of the winding slot S by placing them in the hook 60. After severing these ends as stated, those starting active coil sides are then placed in slot S and the leads thereof, marked 1 in Fig. 3, are pulled away from the zone of winding of the succeeding coils by bending these leads intolthe notch 59 of the head 50. The wires 76 and 77 are then brought around hook H as shown in Fig. 3. i

To locate the core 33 in successive winding positions the block 60 is retracted by pulling down link 69 (Fig. 4), so that the core will clear the indexing lug 58. The core is turned counterclockwise (looking at the tool70 in Fig. 3) to bring the next core slots in alignment with the cheeks of the winding head.

5 Then link 69 is released, and spring 63 presses the block 60 against the core 33.

is completed. After winding a pair of coils the pair of starting active coil sides are placed upon other active coil sides, and the leads thereof are pulled through the notch 59 before winding the next pair of coils. As de 4 scribed in detail in the copending application referred to, certain leads are severed from the hook tool and are bent out of the winding region of the next coil to be wound by bending them, before the next winding operation, either toward the left of the aperture through the notch 59 of head 50, or toward the right of the armature shaft. I

It is therefore apparent that the present invention includes broadly keeping the starting active coil sides out of the core until its coil is completely wound into the core, and in bending leads of previously wound coils out of the winding region and in such direction that the coil "which is subsequently wound into the core slots partly occupied by such previously wound coils will lie alongside the active coil sides of previously wound coils. In this way, the leads and active 'coil sides immediately contiguous will not be buried by subsequently wound coils, and said leads will emerge from the windings rela-- tively near to the core periphery. This method of manufacture is conducive to economy since it avoids the use of the-space usually required between the commutator and V the windings for bringing out the leads from under the overlapping portions of the windings. In joining the leads to the commutator, no abrupt bends in the leads are necessary. Hence the amount of insulation required in addition to the wire insulation for the purpose of preventing short circuits where abrupt bends occur has been reduced.

While the form of embodiment of the present invention as herein disclosed, constitutes a preferred form, it is to be understood that other forms might be adopted, all coming Within the scope of the claims which follow.

What is claimed is as follows:

1. Apparatus for winding an' armature having an open-slotted core comprising, in combination, clamping members for receiving the core and. for rotat ng the core while 7 guiding a wire into certain slots of thecore;

and means rotatable with the core for holding a portion of an armature active coil side out of a core slot while the coil is being wound in the core slots.

2, Apparatus for winding an armature having an open-slotted core comprising, in comblnatlon, a rotatable winding head for receiving the core and for guiding wire into slots thereof as the core is rotated; means rotatable with the core for clamping the core agalnst the head, and means rotatable with the core for holding a portion of an armature active coil side out of a core slot while the coil is being wound in the core slots.

3. Apparatus for winding an armature havlng an open-slotted core comprising, in combination, a rotatable winding head for receiving the core and for guiding wire into slots thereof as the core is rotated; a clamping block spring pressed against the core for holding the core against the head, and rotatable with the core; and a member attached to the block having means for holding a portion of an armature active coil side out of a core slot while the coil is being wound in the core slots;

4. Apparatus for winding an armature having an open-slotted core comprising, in combination, a rotatable winding head for receiving the core and for guiding wire into slots thereof as the core is rotated, a clamping block springpressed against the core for holding the core against the head, and rotatable with the core; and a plate hinged 1y connected with the clamping block and having a hook portion so constructed andarranged a's to be located adjacent a core slot into which wire is guided by the winding head, whereby to hold a portion of an armature active coil side out of a core slot while. the coil isbeing wound into that slot. 7

5. Apparatus for winding an armature having an open-slotted core comprising, in combination, means for winding Wire into certain spaced slots of the core, and means for holding a portion of an active coil side of a coil while the remainder of the coil is being wound upon the core.

6. pparatus for winding an, armature having an open-slotted core comprising, in combination, means for rotating the core while guiding wire into certain spaced slots thereof, and means rotatable with the core for holding a portion of an active coil side of a coil while the remainder of the coil is being wound active coil side while the remainder of the coil is being wound upon the core.

8.Apparatus for winding an armature having an open-slotted core; comprising, in combination, means for winding wire into certain spaced slots of the core, and a plate movably associated withthe core and havin a hook portion so constructed and arranged as to be located adjacent a core slot into which wire is wound in order to receive a portion of an active coil side while the remainder of the coil is being wound upon the core.

9. In an apparatus for winding an armature having an open-slotted core comprising, the combination of means for Winding wire into the armature core slots with means for holding one end of the leads and means for holding a portion of an armature active coil side out of a core while the coil is being wound in the core slots.

In testimony whereof I hereto aflix my signature. FRED G. DEWEY. 

